Improvement in cultivators



PATENT OFFICE.

JAMES J. THOMPSON, OF COLUMBUS, OHIO.

IMPROVEMENT IN CULTIVATRS.

Specification forming part of Letters Patent No. 116,776, dated July 4,1871.

To all whom t may concern:

Be it known that I, JAMES J. THOMPSON, of Columbus, in the county ofFranklin and State of Ohio, have invented a new and Improved Cultivator5 and I do hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawingmakingpait of this specification, in Which- Figure l, plafte l, is aperspective view of my improved cultivator. Fig. 2, plate l, is anelevation of the rear end of the cultivator. Fig. 3, plate 2, is a topview. Fig. 4, plate 2, is a view in detail, showing the mode ofattaching the front ends of the side beams to the draft-pole. Fig. 5,plate 2, is a perspective view of one of the boxes used in attaching theshovel-standards to their beams.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to certain novel improvements on cultivatorsbelonging to that class adapted for two horses, and having four shovelsso arranged that one shovel runs on each side of each row. Myimprovement relates particularly to the attachment of theshovel-standards to their respective beams by means of compound boxes,and through bolts, in addition to diagonal front braces 5 also, to thecombination of lateral adjustable wings, which articulate on the beamwith laterally-adjustable sections of an arch, which also articulate onthe shovel-standard, and a loosely-hinged brace-handle, all as will behereinafter described; also, to the combination of a removable diagonalbrace with the articulating sections of th e arch and articulatingwings, whereby, at will, the cultivator may be made a rigid or aflexible cultivator, and thus adapted for either preparing the ground orcultivating the growing crops.

The following description of my invention will enable others skilled inthe art to understand it:

In the accompanying drawing, Arepresents the draft-pole, which isprovided at a with a pin for coupling to it the double-tree. To thisdraft-pole the front ends of two beams, B B, are connected by means offlexible T-shaped pieces b b, which are curved, as shown in Fig. 3, andmade fast to the beams inside, and connected, by a transverse bolt, c,to the draft-pole. The vertically elongated ends b of these liexiblepieces b are perforated at different points, so that the front ends ofthe beams can be raised or depressed for regulating the pitch of theshovels. Between the heads b b and the draft-pole, plates t tare securedto the draft-pole, the surfaces of which are convex vertic-` ally forallowing the beams B B ee circulation. Near the rear end of thedraft-pole A, and crossing the upper sideof the same transversely, aretwo braces, C C, which are shaped somewhat like the Italic letter j',and which are lapped and secured fast to the draft-pole by means of astaplebolt, d. The upper edges of the lapped ends of braces C C arenotched at e to receive the staple d, and perforated at several pointsto receive confining-bolts, ii, so that the lower extremities c c ofthese braces can be adjusted and set further apart or nearer together,as circumstances require. When the two braces C C are secured togetherat i i, and bolted to the draft-pole at d, they form a strong archedbrace, and their lower hooked ends are fastened into eyes, u u, whichare insertedinto twolong standards, D D, carrying on their lower endsshovels N N. These hookand-eye fastenings allow free lateralarticulation of the said standards, when two diagonal braces, P P, whichextend from the standards to the braces C C, are removed. The standardsD D, carrying the rear shovels, and also the two shorter standards D D',carrying the front shovels, are all secured to the beams B B by means ofcompound boxes g, bolts s, and front inclined brace-rods n. Each metalbox g consists of a central cell, y, perforated at to receive through ita bolt, s, and four flanges, y1 y1 and y2 y2. The two flanges 1/1 y1receive the beam B, and the two anges y2 y2 receive the standard; thebolt s is passed transversely through the beam, the standard, and thecell, and conines the whole rigidly together. In addition to each box g,each shovel-standard is braced by an inclined rod, n, which sustains itagainst backward thrust. To the upper extremities of the rear standardsD D metal loops GG are secured, which extend backward and upward, andhave connected to them, by means of staplebolts h h., a transversehandle, E. This handle connects together the upper ends of the rearshovel-standards, and enables the attendant, walking behind the machine,to guide the shovels between the rows.

In the drawing I have represented two braces, P P, connecting the rearstandards D D to the braces C C. When these braces are thus used,

the beams B B and the draft-pole, as Well as the four standards, Will berigidly held. But When these braces are removed the articulations at thefront ends of the beams B B, at the hooked extremities of thebraces C C,and at the junctions of the rear standards with the handle E, Will alloTthe attendant, with his hands grasping the handle E, to vibrate thepoints of the shovels laterally and thus guide the shovels betweenirregular rows.

Having described my invention, What I claim as new, and desire to secureby Letters Patent, 1s-

1. The boxes g, composed of cells y and iianges y1 y1 y2 y2, incombination with shovel-standards,

